COMP: Remove redundant Typename structs. #3195.

in itkTransformIOBase.hxx and itkMINCTransformIO.hxx.

Change-Id: I64fe9d6f144b8d08f4f814a61e3d448e0e9f3581
Merge topic 'MINCCompile'

925b37a COMP: Remove redundant Typename structs. #3195.